Jana Wenzel (Adina Vetter) finds her husband Christoph strangled. Missing from the murdered man's secret collection of instruments is a Stradivarius that has been lost for decades: the "Messias". A myth says that whoever plays this violin will die a violent death. Has the curse taken its toll here, or is the motive for the murder more mundane, because the dead man was a customer of a fence ring whose convicted leader Antonio Zübert (Luka Dimic) is free again and seeking revenge?
The undercover investigator into the ring back then was none other than Luisa Hoffmann (Alina Fritsch), who suddenly finds herself confronted with her past and now fears for her life. Hoffmann's private entanglements in the case put Oberländer's relationship of trust with her to a severe test.